[Info-vax] OT: OpenVMS Medical job

[David J Dachtera]

Artemus Ward wrote:
> 
> On Oct 12, 5:22 am, David J Dachtera <djesys... at spam.comcast.net>
> wrote:
> 
> > They list VMS, Multinet andIngres. So, we know they're not talking
> > about a high transaction volume environment.
> 
> In the absence of any definition of what you mean by "high transaction
> volume environment" it's tough to say you are mistaken, but Ingres is
> quite capable of supporting thousands of concurrent on-line users.

Figure transactions-per-second ("high transaction volume environment"),
and ignore user count.

The transaction brokering software (Qvadx) at my former site had zero
users, but processed many tens of thousands of transactions per second
at peak load.

Ingres would not be the first bottleneck encountered, Multinet would be
since it uses direct I/O instead of buffered I/O. Google this group for
previous discussions of the reason why that's important.

D.J.D.